CVE-2026-106486
Published:October 06, 2026
Updated:October 12, 2026
Backstage is an open framework for building developer portals. Prior to 0.3.10 in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud and 0.2.25 in @backstage/plugin-scaffolder-backend-module-bitbucket-server, the Bitbucket pull-request Scaffolder actions did not sufficiently validate filesystem paths. An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability. This issue is fixed in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25.
Affected Packages
https://github.com/backstage/backstage.git (GITHUB):
Affected version(s) >=v1.23.0-next.2 <v1.54.6Fix Suggestion:
Update to version v1.54.6@backstage/plugin-scaffolder-backend-module-bitbucket-server (NPM):
Affected version(s) >=0.0.0-nightly-20240207020916 <0.2.25Fix Suggestion:
Update to version 0.2.25@backstage/plugin-scaffolder-backend-module-bitbucket-cloud (NPM):
Affected version(s) >=0.2.0-next.2 <0.3.10Fix Suggestion:
Update to version 0.3.10@backstage/plugin-scaffolder-backend-module-bitbucket-cloud (NPM):
Affected version(s) >=0.0.0-nightly-20240207020916 <0.3.10Fix Suggestion:
Update to version 0.3.10@backstage/plugin-scaffolder-backend-module-bitbucket-server (NPM):
Affected version(s) >=0.1.0 <0.2.25Fix Suggestion:
Update to version 0.2.25Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.33